ACPI: SBS: remove typo from sbchc.c

[sfrench/cifs-2.6.git] / drivers / acpi / sbshc.c

diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index ae9a90438e2f32f497e207889bf4677c431c3383..bcf2c70fca87f498b9a3c5af5e0037248c488b37 100644 (file)
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -117,6 +117,11 @@ static int acpi_smbus_transaction(struct acpi_smb_hc *hc, u8 protocol,
        int ret = -EFAULT, i;
        u8 temp, sz = 0;
 
+       if (!hc) {
+               printk(KERN_ERR PREFIX "host controller is not configured\n");
+               return ret;
+       }
+
        mutex_lock(&hc->lock);
        if (smb_hc_read(hc, ACPI_SMB_PROTOCOL, &temp))
                goto end;
@@ -125,7 +130,6 @@ static int acpi_smbus_transaction(struct acpi_smb_hc *hc, u8 protocol,
                goto end;
        }
        smb_hc_write(hc, ACPI_SMB_COMMAND, command);
-       smb_hc_write(hc, ACPI_SMB_COMMAND, command);
        if (!(protocol & 0x01)) {
                smb_hc_write(hc, ACPI_SMB_BLOCK_COUNT, length);
                for (i = 0; i < length; ++i)
@@ -292,6 +296,7 @@ static int acpi_smbus_hc_remove(struct acpi_device *device, int type)
        hc = acpi_driver_data(device);
        acpi_ec_remove_query_handler(hc->ec, hc->query_bit);
        kfree(hc);
+       acpi_driver_data(device) = NULL;
        return 0;
 }